This is a story of the two alicorn sisters, a tragic story... Their story is a dark one, a troubled one. And Luna isn't the only one who struggled. As much as Luna was pained, Celestia was even more. But she's just hiding it better...

Princess Nightmare Moon had tried to keep it secret. She had feigned ignorance, but the charade could not last. She nocked the arrow. Tirek was a large target; he would fall easily. Then the true challenge would come: explaining herself to Celestia.

Nightmare Moon won. She defeated Celestia, broke the Elements, banished the sun. This all happened a very long time ago. So long ago, that she has had plenty of time to change her mind. Not that fixing it will be simple.

This is a story of the two alicorn sisters, a tragic story... Their story is a dark one, a troubled one. And Luna isn't the only one who struggled. As much as Luna was pained, Celestia was even more. But she's just hiding it better...

Luna is banished to the moon, but she still struggles. And Celestia is steadily getting worse and worse, with no sister to comfort her. Note: This is the sequel to Darkness and Light, so if you haven't already, read that first.

Although Luna dying always tantalizes my heart, this is a nice interpretation.I like how you showed Luna growing distant from her subjects as well as her sister. And I love Luna to be herself in both, Princess of the Night as well as Nightmare Moon, the same beings with the same mind. It makes the best stories.